Attachment for walking-beams



(No Model.) 7

- A. BPERT.

ATTACHMENT FOR WALKING BEAMS.

N0. 556,340. Patented Mar. 17, 1896.

Witnesses. Inventor.

QJM W 5% Attorney.

UNITED STATES PATENT QEEICE.

AUGUSTUS EPERT, OF FRANKLIN, PENNSYLVANIA.

ATTACHMENT FOR WALKING-BEAMS.

SPECIFICATION forming part of Letters Patent No. 556,340, dated March17, 1896.

Application filed February 1, 1896. Serial No. 577,662. (No model.)

T all whom it may concern.-

Be it known that I, AUGUSTUS EPEEr,-a citizen of the United States,residing at Franklin, in the county of Venango and State ofPennsylvania, have invented certain new and useful Improvements inAttachments for alking-Beams; and I do hereby declare the following tobe a full, clear, and exact description of the invention, such as willenable others skilled in the art to which it appertains to make and usethe same.

This invention relates to a walking-beam attachment, and particularly toa device for holding the temper-screw hook used in wellboring in properposition upon the walkingbeam.

The object of the invention is to provide a clamp or clamps to fit overthe end of the walking-beam and hold the trunnions of the temper-screwhook upon said beam end, without weakening or impairing the strength ofthe said beam, by making in the beam bearings for the trunnions orforming bolt-holes to keep the clamps in position.

A further object of the invention is to provide means whereby thetemper-screw-hook trunnions may have a slidable motion upon the top ofthe walking-beam, that said hook may center itself in line with thetemperscrew, and to increase or diminish the slidable travel of thetrunnions as desired.

Other objects and advantages accruing from the special construction andarrangement of parts will appear in the specification to follow.

In the accompanying drawings, forming part of this application, Figure 1is a perspective View of part of a walking-beam with the temper-screwhook held in position by my clamps, the temper-screw and its bridlebeing partly broken away. Fig. 2 is a side elevation of the beam end andhook with the clamps adjusted to give the hook-trunnions increasedslidable play. Fig. 3 is a perspective view of one of the clamps, partlybroken away to show the sheave or pulley it contains.

The same numeral references denote the same parts throughout the severalfigures of the drawings.

The temper-sore w 1 has the usual lift-ropes 2, with weight 3, and thesaid screw is provided with an ordinary bridle 4c- The temper-screw hook5 has trunnions 6, which engage the plain top surface of the end of thewalking-beam 7 upon each side of a slot 8, with the stem of the saidhook depending through the slot. The hook is held in this position bymeans of a clamp 9, placed over the top of the slot 8 in front ofthetrunnions, and a similar clamp 10 in like position behind thetrunnions. These clamps are adjustably held in position by theset-screws 11 without making screw-holes in the sides of the beam, andthe slot is of sufficient length to admit of the hook being fixedtherein as desired and to give the trunnions greater or less play bysimply adjusting the clamps.

Besides the fact of avoiding the expense of trunnion-bearings and theconsequent weakening of the beam at the slot, these clamps strengthenthe beam at this point by extending across the slot and hugging thesides of the beam closely.

The under side of each clamp is provided with conical projections orspurs 12, which engage the surface of the beam on either side of theslot to further insure the clamps from displacement and to hold them inposition while the set-screws are being tightened. These spurs requireno holes made in the beam, and are simply forced into the wood asdesired, and are readily removed when it is desired to change theposition of the clamp or clamps.

The ends of the clamp 9 have an aperture 13, in which is secureda'sheave or pulley 14, and a double pulley 15 is secured to the underside of the beam 7. The lift-ropes 2 are supported by these sheaves andpulley to the weight 3.

The ends of the clamp 10 are provided with a ring 16, to which issecured the end of a bellows rope or chain 17. The latter passes throughthe eye of a screw-bolt 18 upon the top of the beam for the purpose ofoperating a bellows and forge (not shown) by the working of thewalking-beam.

I do not wish to be understood as limiting myself to the use of myclamps applied to beams only with aslot, to the size, nor to thematerial of which the clamps are made; but,

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. The combination with a walking-beam,-

and a hook having trunnions engaging the top of the beam, of the clampsadj ustably secured to the beam upon each side of the trunnions, tolimit the movement of the latter, substantially as set forth.

The combination with a walking-beam, and the hook having trunnions, ofmeans for slidably holding the trunnions upon the beam, consisting ofthe clamps upon each side of the trunnions and having conicalprojections engaging the top of beam, and the set-screws engaging theclamp ends and the sides of the beam, substantially as set forth.

3. The combination with the walking-beam,

the trunnioned hook, the clamps secured to the beam and between whichthe trunnions are slidably retained, of the sheaves housed in the endsof one of the said clamps, the sheave 15, the temper-screw, and theliftropes from said screw, supported by the sheaves, substantially asshown and described and for the purpose set forth.

I11 testimony whereof I affix in y signature in presence of twowitnesses.

AUG-US'IUS EPERT. \Vitnesses:

B. V. RIDDLE, DELMAR T. MARK.

